ChemSusChem
ChemSusChem
5 years ago

Green Processing of Lignocellulosic Biomass and Its Derivatives in Deep Eutectic Solvents

Green Processing of Lignocellulosic Biomass and Its Derivatives in Deep Eutectic Solvents
Zheng Li, Caixia Xiong, Lu Lin, Huai Liu, Miao Zuo, Yong Sun, Shijie Liu, Xing Tang, Tingzhou Lei, Xianhai Zeng, Lei Hu
The scientific community has been seeking cost-competitive and green solvents with good dissolving capacity for the valorization of lignocellulosic biomass. At this point, deep eutectic solvents (DESs) are currently emerging as a new class of promising solvents that are generally liquid eutectic mixtures formed by self-association (or hydrogen-bonding interaction) of two or three components. DESs are attractive solvents for the fractionation (or pretreatment) of lignocellulose and the valorization of lignin, owing to the high solubility of lignin in DESs. DESs are also employed as effective media for the modification of cellulose to afford functionalized cellulosic materials, such as cellulose nanocrystals. More interestingly, biomassderived carbohydrates, such as fructose, can be used as one of the constituents of DESs and then dehydrated to 5-hydroxymethylfurfural in high yield. In this review, a comprehensive summary of recent contribution of DESs to the processing of lignocellulosic biomass and its derivatives is provided. Moreover, further discussion about the challenges of the application of DESs in biomass processing is presented. Going green: Cost-competitive and green solvents with good dissolving capacity for the valorization of lingocellulosic biomass are required. This review discusses deep eutectic solvents as green solvents for the valorization of lignocellulosic biomass, which is generally composed of widely available, renewable, and low toxicity/nontoxic compounds.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/cssc.201700457

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